// Access Ranking のレイヤー表示
function visibler(Name) {
	var rnkArray = new Array("ten", "twenty", "thirty");
	var btnArray = new Array("tenBtn", "tweBtn", "thiBtn");
	var targetName;
	var targetBtn;
	for (var i = 0; i < rnkArray.length; i++) {
		if (document.all) {
			targetName = document.all(rnkArray[i]).style;
			targetBtn = document.all(btnArray[i]).style;
		} else if (document.getElementById) {
			targetName = document.getElementById(rnkArray[i]).style;
			targetBtn = document.getElementById(btnArray[i]).style;
		} else {
			return false;
		}
		//
		if (Name != rnkArray[i]) {
			targetName.display = "none";
			targetBtn.backgroundPosition = "0 -16px";
		} else {
			targetName.display = "block";
			targetBtn.backgroundPosition = "0 0";
		}
	}
}